Columbia Valley AVA
Summary
Massive AVA in Washington that, between wine classified in this AVA and it's sub-AVAs, accounts for nearly all of the state's wine production. Strongly influenced by latitude and rain shadow effect of Cascade Range.
- facts:
 - 99% of state's production
 - Used to classify wines blended across sub-AVAs and not made in a sub-AVAs
 - Anticlines (ridges) can be found where the bedrock rises towards the surface creating sloped sites with variations in aspect and altitude